The study of human factors that affect the design and operation ...

[lunatika]

The study of human factors that affect the design and operation of tools and the work environment is known as ___________________ _.
 Fill in the blank(s) with correct word

Question 2

Spasmodic ___________________ _ is a stiff neck due to contraction of the neck muscles that pull the head toward the affected side.
 Fill in the blank(s) with correct word

[jessicaduplan]

Answer to Question 1

ergonomics

Answer to Question 2

torticollis